Massage gun extension arm



FIG. 1 is a front perspective view of a massage gun extension armshowing my new design;

FIG. 2 is a perspective view thereof;

FIG. 3 is a side view thereof;

FIG. 4 is an end view thereof; and,

FIG. 5 is an opposite end view thereof.

The broken lines shown in the drawings are for the purpose ofillustrating environmental structure, which form no part of the claimeddesign.

CLAIM An ornamental design for a massage gun extension arm, as shown anddescribed.